The Musculoskeletal System by Anisa Guedira https://padlet.com/amguedira15/s2cy71tnz0ic en-us 2018-02-20 19:02:05 UTC 2025-10-13 07:32:45 UTC hello@padlet.com Describe the life process of movement. What has to happen, and why? amguedira15 https://padlet.com/amguedira15/s2cy71tnz0ic/wish/233887914 Bones work with their attached muscles to control movement and maintain body position. 
  • Act antagonistically towards one another
    • Movement produced by one muscle can be reversed by the other
  • Only pull in one direction
    • Happens due to the central nervous system sending signals to that muscle
    • Contraction: actin and myosin filaments slide past each other
]]> 2018-02-21 17:56:45 UTC https://padlet.com/amguedira15/s2cy71tnz0ic/wish/233887914 Explain how the musculoskeletal system depends on other life processes to function. Provide three specific examples. amguedira15 https://padlet.com/amguedira15/s2cy71tnz0ic/wish/233888705 The musculoskeletal system depends on other life processes to function due to not being able to obtain nutrients, oxygen and other life necessities. 
  • Relies on the digestive system because nutrients are extracted and are used to build muscle. 
  • During growth and development, hormones such as testosterone strengthen and lengthen muscle, making it easier with manual tasks.
  • Metabolism helps provide ATP needed for contractions, resulting in easier, quick and more muscle usage. 

]]> 2018-02-21 17:58:11 UTC https://padlet.com/amguedira15/s2cy71tnz0ic/wish/233888705 Explain how organisms (unicellular organisms, plants and animals) move. Provide a specific example organism for each category. amguedira15 https://padlet.com/amguedira15/s2cy71tnz0ic/wish/233888804
  • Unicellular organisms move through structure such as flagella and cilia.
  • Plants move using the wind or animals when they are seeds 
    • Also through trophisms that respond to light exposure and gravity. 
  • Animal movement uses muscles attached to exoskeleton or endoskeleton via tendons as well as joints and ligaments connecting bones.  
    • ]]>     2018-02-21 17:58:21 UTC https://padlet.com/amguedira15/s2cy71tnz0ic/wish/233888804     Describe three muscular adaptations in different lineages of multicellular animals (not mammals). For each adaptation, describe how the specific movement is accomplished, explain one benefit of the adaptation, and one “tradeoff” that has resulted from the adaptation. amguedira15 https://padlet.com/amguedira15/s2cy71tnz0ic/wish/233888883 Skeletal muscles in animals are characterized by the specific adaptations which are as a result of the natural evolution of the animals. Some of these adaptations include the following:
    •  Increased muscle mass relative to the body weight.  
    •  High mitochondrial volume 
      • Allows a higher animal capacity as well as it stores energy of different substrates.
    ]]>     2018-02-21 17:58:33 UTC https://padlet.com/amguedira15/s2cy71tnz0ic/wish/233888883     Diagram a muscle fiber (skeletal), including the proteins that are involved. Create an original image. amguedira15 https://padlet.com/amguedira15/s2cy71tnz0ic/wish/233889120 2018-02-21 17:58:57 UTC https://padlet.com/amguedira15/s2cy71tnz0ic/wish/233889120 Two examples of disruption/disease to the musculoskeletal system? anito0095 https://padlet.com/amguedira15/s2cy71tnz0ic/wish/233889144 1. Arthritis: tissues become less tough to wear and tear. 

    2.Muscular dystrophy- Group of inherited diseases in which the muscles that control movement progressively weaken.
    • Most common form is found in children (duchenne muscular dystrophy)
    • Symptoms: progressive muscle weakness, frequent falls, difficulty rising from a lying or sitting up position, trouble running and jumping
    • Treatment: No cure for any form of muscular dystrophy. Options include the following: medications, physical and occupational therapy, and surgical and other procedures.
    • Cause: genes that are involved in making proteins that protect the muscle fibers from damage. Muscular dystrophy usually occurs when one of these genes is defective. 
    ]]>     2018-02-21 17:59:00 UTC https://padlet.com/amguedira15/s2cy71tnz0ic/wish/233889144     Explain the differences in composition between bones, tendons/ligaments, cartilage and muscle. amguedira15 https://padlet.com/amguedira15/s2cy71tnz0ic/wish/233889499
  • Tendons: cord-like structures that transmit muscular force to a bone- generally long and shiny but can also be short, thick and flat.
  • Ligament: holds bones together, usually found around joints. 
  • Cartilage: tissue almost as tough as a bone, has the ability to withstand a lot of compression.
    • ]]>     2018-02-21 17:59:33 UTC https://padlet.com/amguedira15/s2cy71tnz0ic/wish/233889499     Smooth Muscle amguedira15 https://padlet.com/amguedira15/s2cy71tnz0ic/wish/233889942 Smooth muscle lacks striation and is not attached to bones. 
    • Makes up walls in hollow organs (bladder, lower intestines, stomach) and passageways (arteries and veins, respiratory tracts). 
    • Muscle fibers are spindle shaped with a single nucleus  
    ]]>     2018-02-21 18:00:16 UTC https://padlet.com/amguedira15/s2cy71tnz0ic/wish/233889942     Cardiac Muscle amguedira15 https://padlet.com/amguedira15/s2cy71tnz0ic/wish/234409602 Cardiac muscle contracts and relaxes in alternating rhythm to propel blood.  
    • Works involuntarily, allowing blood to flow through and reach/leave the heart. 
    • Muscle fibers contain a single nucleus and are striated. 

    ]]>     2018-02-22 18:41:26 UTC https://padlet.com/amguedira15/s2cy71tnz0ic/wish/234409602     Skeletal Muscle amguedira15 https://padlet.com/amguedira15/s2cy71tnz0ic/wish/234411968 Skeletal muscle is the only voluntary controlled muscle; it can be used to produce and stop movement. 
    • Attached to bones through tendons connecting the two.
    • Muscle fibers are striated with multiple nuclei 
    • Stimulated by a single brief electrical stimulus
    ]]>     2018-02-22 18:44:35 UTC https://padlet.com/amguedira15/s2cy71tnz0ic/wish/234411968     Bacteria with Flagella amguedira15 https://padlet.com/amguedira15/s2cy71tnz0ic/wish/234418067 2018-02-22 18:52:57 UTC https://padlet.com/amguedira15/s2cy71tnz0ic/wish/234418067 Dandelion amguedira15 https://padlet.com/amguedira15/s2cy71tnz0ic/wish/234419166 2018-02-22 18:54:33 UTC https://padlet.com/amguedira15/s2cy71tnz0ic/wish/234419166 Humans amguedira15 https://padlet.com/amguedira15/s2cy71tnz0ic/wish/234419657 2018-02-22 18:55:16 UTC https://padlet.com/amguedira15/s2cy71tnz0ic/wish/234419657 Tendons amguedira15 https://padlet.com/amguedira15/s2cy71tnz0ic/wish/234430380 2018-02-22 19:10:57 UTC https://padlet.com/amguedira15/s2cy71tnz0ic/wish/234430380 Ligaments amguedira15 https://padlet.com/amguedira15/s2cy71tnz0ic/wish/234430984 2018-02-22 19:11:51 UTC https://padlet.com/amguedira15/s2cy71tnz0ic/wish/234430984 Cartilage amguedira15 https://padlet.com/amguedira15/s2cy71tnz0ic/wish/234431286 2018-02-22 19:12:18 UTC https://padlet.com/amguedira15/s2cy71tnz0ic/wish/234431286